html{
    background-image: url("/img/background.jpg");
    background-size: cover;
}
.register-form{
    height: 320px;
    /*height: 250px;*/
    width: 260px;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    position: absolute;
    left: 50%;
    top: 50%;
    margin: -150px 0 0 -150px;
    z-index: 99;
}
.register-h1{
    text-align: center;
}